Ryanair maintained its barrage of complaints against governments and regulators, airport authorities and competitors with a blast against the European Commission on Tuesday morning.

Europe’s largest low-cost airline said it would sue the Commission for “its repeated failure to take action on a number of state aid complaints involving Air France-KLM, Lufthansa, Alitalia and Olympic Airways, which were submitted to the Commission over a year ago“.

Ryanair alleges hundreds of millions of euros of illegal state aid has subsidised these airlines and that Brussels has failed to act.